Community Q&A Question: These vs GT40P??

Asking About: Mustang SVE 170cc Performance Aluminum Cylinder Heads - 61cc Chamber (79-95) 5.0/5.8


These vs GT40P??

I have some GT40P heads on my 89 GT, how do these compare? I see these have larger combustion chambers so I know they would lower my compression. I'm looking for low end power, it's a street car. Am I better off sticking with the smaller heads? Thank you.
from Portland |
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Accepted Answer
these heads have larger ports and valves than your gt40p's, and they're also significantly lighter. depending on your combination, you should see a significant power increase without a significant loss in low-end torque. the rockers are stud mounted, so they allow for adjustable valvetrain, and the springs are capable of withstanding a higher-lift cam than factory gt40p springs.
from hewitt |
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